Gaskell, Thomas Frohock. <br/><br/>
Under the deep oceans :  twentieth century voyages of discovery. 

 - London :  Eyre & Spottiswoode,  [1960] 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Challenger (Steamship)
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ocean bottom.<br/>Deep-sea sounding.